The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 25, 2007
Filed:
Dec. 28, 2004
Tomokazu Tanaka, Atsugi, JP;
Tadashi Hatano, Yokohama, JP;
Hiroo Matsue, Yokohama, JP;
Cleitus Antony, Yokohama, JP;
Tomokazu Tanaka, Atsugi, JP;
Tadashi Hatano, Yokohama, JP;
Hiroo Matsue, Yokohama, JP;
Cleitus Antony, Yokohama, JP;
Opnext Japan, Inc., Yokohama-Shi, JP;
Abstract
An optical transmitter in which a microstripline is formed by a signal wiring pattern and a GND conductor pattern on a circuit board (including a flexible board), and a signal lead of a light emitting element module is mounted in a signal lead mounting hole connected with said signal wiring pattern so as to be connected with said signal wiring pattern, wherein a pattern adapted to add capacitance between a stem of said light emitting element module and said signal wiring pattern is provided on said signal wiring pattern on said circuit board, and wherein the pattern adapted to add capacitance has a size corresponding to ±50% of a capacitance C≈L/Zo, where Zo is signal line impedance, and L is the signal lead inductance.